Volume 37 Issue 4
Aug.  2020
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Article Navigation >  DRILLING FLUID & COMPLETION FLUID  > 2020  >  37(4): 450-455
SHAN Kai, QIU Zhengsong, ZHONG Hanyi, ZHAO Xin, ZHOU Keren, ZHANG Minli, ZHANG Xianbin, WANG Leilei. High Temperature Lubricant for Use in High Density High Salinity Water Base Drilling Fluids[J]. DRILLING FLUID & COMPLETION FLUID, 2020, 37(4): 450-455. doi: 10.3969/j.issn.1001-5620.2020.04.008
Citation: SHAN Kai, QIU Zhengsong, ZHONG Hanyi, ZHAO Xin, ZHOU Keren, ZHANG Minli, ZHANG Xianbin, WANG Leilei. High Temperature Lubricant for Use in High Density High Salinity Water Base Drilling Fluids[J]. DRILLING FLUID & COMPLETION FLUID, 2020, 37(4): 450-455. doi: 10.3969/j.issn.1001-5620.2020.04.008
shu

High Temperature Lubricant for Use in High Density High Salinity Water Base Drilling Fluids

doi: 10.3969/j.issn.1001-5620.2020.04.008

  • 1. School of Petroleum Engineering, China University of Petroleum(East China), Qingdao, Shandong 266580;

  • 2. Drilling Fluids Technology Service Company, BHDC, CNPC, Tianjin 300280

  • Received Date: 2020-02-23
  • Publish Date: 2020-08-28
    Abstract
  • In deep well drilling, ultra-high temperature, high salinity and high density impose rigorous requirements on the performance of drilling lubricants. A lubricant SDR-1, made from an environmentally friendly modified base oil, an extreme pressure filming agent, a compound surfactant and a compound anti-oxidant, has recently been developed for use in high density high salinity drilling fluids at high temperatures. Evaluation of SDR-1 showed that SDR-1 is able to work effectively at 200 ℃. A saturated salt mud and a saturated salt mud containing 6000 mg/L, when treated with SDR-1, had friction coefficient reduced by 80%. SDR-1 has good sedimentation stability and fluorescence of level 3 or lower. SDR-1 is well compatible with high density drilling fluids, and is able to effectively reduce the flow pressure loss and dynamic friction.

     

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